From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: `unreadablep' Date: Wed, 15 Dec 2021 09:12:16 -0500 Message-ID: References: <87bl1imhnd.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="39852"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: emacs-devel@gnu.org To: Lars Ingebrigtsen Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Dec 15 15:17:50 2021 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mxV6M-000ABv-Ak for ged-emacs-devel@m.gmane-mx.org; Wed, 15 Dec 2021 15:17:50 +0100 Original-Received: from localhost ([::1]:42016 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mxV6L-0005a9-Az for ged-emacs-devel@m.gmane-mx.org; Wed, 15 Dec 2021 09:17:49 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:46434) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mxV1A-0004rY-Lh for emacs-devel@gnu.org; Wed, 15 Dec 2021 09:12:31 -0500 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:45344) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mxV15-0007ro-Ge for emacs-devel@gnu.org; Wed, 15 Dec 2021 09:12:27 -0500 Original-Received: from pmg2.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 728E480620; Wed, 15 Dec 2021 09:12:20 -0500 (EST) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id DFF3D8030F; Wed, 15 Dec 2021 09:12:18 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1639577538; bh=RSrMEsF4rWB2MZZJ8imTIP9WuQ7JD6xq2kIH+MAvUAk=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=HEnOJNwIE2lp2+9NeJJstf5BXZGizkb0dB5S2O9su2jfGx68PQYLWW/6VK1j1Wy5G 3c5dnI06rk9/MRr2yg/3Lz4/4/MymAsH8k13YEXZi5eQfWxZGa0xXj90irwJm/p58J I2PDGozvxY017PFzZNGla1uklfGF5nLmgt5kwwSUCDXtPpecwzl3XC2e3ews+l78UQ s1lgK2ox4fXLcfoDQ6mlVJpXqDNuNlKCWoXJA2R2iA5jQ9VFGKH+PGxZN40/dQ6N6D 60oHMb2+PkWM/hK9potq+MOZ1WB3SypMb6SqSdI6GxDNlxlD60Z9ilLBNiRPHvvbgH 2rJfVGtN/FyMQ== Original-Received: from pastel (unknown [216.154.30.173]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 6CD681207CC; Wed, 15 Dec 2021 09:12:18 -0500 (EST) In-Reply-To: <87bl1imhnd.fsf@gnus.org> (Lars Ingebrigtsen's message of "Wed, 15 Dec 2021 08:49:58 +0100") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:282042 Archived-At: > Do we have any primitive that can be used to check whether an object is > printable or not? Code like this (from savehist.el) makes me believe > "not": IIRC we discussed such a feature but it never got installed. My memory suggests the plan was to add something like a `print-unreadable-function` that gets called with the offending object. It could then print it any which way it wants, or signal an error or ... Stefan